Journal
CLIMATE DYNAMICS
Volume 47, Issue 9-10, Pages 3335-3357Publisher
SPRINGER
DOI: 10.1007/s00382-016-3029-3
Keywords
Ocean heat transport; Potential oxygen; Hemispheric asymmetry; HIPPO aircraft campaign
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Funding
- NSF [ATM-0628519, ATM-0628388]
- Climate Program Office of the National Oceanic and Atmospheric Administration
- US NSF [OCE 10-60804]
- National Science Foundation
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Despite its importance to the climate system, the ocean meridional heat transport is still poorly quantified. We identify a strong link between the northern hemisphere deficit in atmospheric potential oxygen (APO = O + 1.1 CO) and the asymmetry in meridional heat transport between northern and southern hemispheres. The recent aircraft observations from the HIPPO campaign reveal a northern APO deficit in the tropospheric column of 10.4 1.0 per meg, double the value at the surface and more representative of large-scale air-sea fluxes. The global northward ocean heat transport asymmetry necessary to explain the observed APO deficit is about 0.7-1.1 PW, which corresponds to the upper range of estimates from hydrographic sections and atmospheric reanalyses.
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